<template>
<el-container class="home-container">
  <el-header>
    <div>
      <img src="../assets/logo.png" alt="">
      <span>电商后台管理系统</span>
    </div>
     <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <el-container>
    <el-aside :width="isCollapse? '64px' : '200px'" >
      <div class="toggle-button" @click="toggleCollapse">|||</div>
      <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#ffd04b" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
        <template slot="title">
          <i class="el-icon-location"></i>
          <span>{{item.authName}}</span>
        </template>
          <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
            <template slot="title">
            <i class="el-icon-location"></i>
            <span>{{subItem.authName}}</span>
            </template>
        </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <el-main>
      <router-view> </router-view>
    </el-main>
  </el-container>
</el-container>
</template>


<script>
export default {
  data(){
    return{
      menulist: [],
      isCollapse: false,
      activePath: ''
    }
  },
  created() {
    this.getMenuList(),
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList(){
     const{data: res} = await this.$http.get('menus')
     if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
     this.menulist = res.data
    },
    toggleCollapse(){
      this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    img {
      width: 10%;
      height: 10%;
    }
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #EAEDF1;
}
.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
